Pressure-regulating valve



March 4 1924.

W. J. BROWN PRESSURE REGULATING VALVE Filed Aug. 15

INVENTOR Patented Mar. 4, 1924.

' UNITED STATES PATENT OFFICE.

WILLIAM J. BROWN, 0]! NEWARK, NEW JERSEY, ASSIGNOR TO HOWARD W. BEACH, OF NEWARK, NEW JERSEY.

rnnssuau-nncunn'rme vnnvn Application filed August 15, 1922. Serial No. 582,058.

To all whom it may concern:

Be it known that I, WILLIAM J. BROWN, 'a citizen of the UnitedStates, and a res1-,

dent of Newark, county of Essex, and State of New Jersey, have mvented certain new and useful Improvements in Pressure-Regulating Valves, of which the following is a specification.

This invention relates to an improved pressure regulating valve, and the object of the invention is to provide a valve in which the diaphragm is maintained in a resilient operative condition, due to its construction, so that on its recovery from extreme distortion it readily resumes its original flat position and does not buckle.

The invention is further designed to provide a valve in which, under extreme action of the pressure regulatin means, the valve controlling the ports in t e valve casing is not entirely shut ofi.

The invention is illustrated in the accompanying drawings, in which Figure 1 is a section of a valve made according to my invention, with a part of the valve stem and a regulating screw shown in elevation. Figure 2 is a section on line 2-2 in Figure 1. Figure 3 is an enlarged detail section taken on line 3-3 in Figure 1. Fi "e 4 is a detail section showing, on an enlarged scale,

part of the valve casing, the valve-stem and the diaphragm. Figure 5 is a top view of the large or base sheet of the diaphragm, and Figure 6 is a top view. of the diaphragm, partly broken away and showing the successive sheets thereof broken away to more clearly illustrate the construction of the diaphragm.

While the particular arrangement of the parts and the disposition of them is subject to modification, I show, as an embodiment of my invention, .a valve casing ing usually fastened together by screwing them together as at 12, the valve casing having ports for the passage of fluid, such as the inlet port 13 and the outlet port 14, both of them communicating with the chamber 15 in a lug or extension 16 of the valve casing, the end of which is preferably closed by a suitable plug or cap 17 to permit access to the .valve for its regulation, such alve. to be described more in detail here- 10 over which is placed a bonnet 11, these be inafter. The ports are further connected through the chamber 18 and the passage 19 The valve 20, when moved u and down, regulates the opening of the end of the passage 19 and thus controls the passage of fluid to the ports of the valve casing, the valve 20 being mounted on a stud 21 which is screwed into the center of the enlargement 22 of the valve stem, this enlargement 22 having recessed portions 23, which re cessed portions will be clearly seen from Figure 3, and they extend to the bottom of the enlarged part 22 and are diametrically separated by a space that is less than the diameter of the passage 19, so that even when the valve stem is pressed down so that the bottom of it abuts on the shelf 24, liquid can still pass through these recessed parts into the passage 19.

For regulating the valve stem I provide a diaphragm which is made up of sheets 25, these sheets being successively smaller in diameter, usually with the largest sheet on the bottom and the smallest sheet on the top, and they are all perforated at the center, as at 26, so that'the diaphragm can be attached to the valve stem, usuallyv by the bolt 27 from the extension 22 passing through the diaphragm and the cap 28 being screwed down to clamp the diaphragm tightly to the stem. This diaphragm is usually held in place by clamping it between the bonnet and the valve casing, and for this purpose I prefer to arrange an annular shoulder 29 on the valve casing and a shoulder 30 on the bottom face of the bonnet, and I provide the largest of the sheets of the diaphragm, which I will designate as 3-1, with afiange 32 which is clamped between the shoulders 29 and 30, and the outer end 33 of the sheet 31 is clamped between the outermost of the flat abutting faces of the bonnet and the valve casing.

Suit-able pressure means is arranged to normally hold the valve in the desired position, and I show a screw 34 as an element embodying such regulating or controllin means, which is screw-threaded in the to o thebonnet and base cap or plate 35. The spring 36 abuts at one end on the'cap or plate 35, and abuts at the other end on the diaphragm. It is desirable that the smallest of the sheets 25 be at least as large as the outside diameter of the spring 36. These laminated sheets, usually of sheet metal, and I have found copper to be very good for this purpose, provide a diaphragm which is highly resilient in that after being submitte to excessive distortion it will resume its natural or normal position and will not sag, nor will it become distorted or crinkled, as a single metallic diaphragm is apt to become.

It will also be noted that the screw 34 is turned down to force the diaphragm so far that the bottom of the part 22 abuts on the shoulder 24. The recessed parts 23 permit of the passage of the fluid, and it will be further noted that the construction of the valve casing, with the boss 16 and its closure 17, permits ready access for adjustment 0 the valve 20, use of a screw-driver.

I claim:

1. A pressure regulating valve comprising a valve casing, a 'bonnet on the valve casing, a diaphragm secured at its edge between the caslng and bonnet, said diaphragm consisting of laminated sheets successively decreasing in diameter, a valve stem secured to the diaphragm and supported thereby, the valve casing having ports therein, and a valve on the stem for controlling the passage of fluid through the ports.

2. A pressure regulating valve comprising a valve .casing and a bonnet, a diaphragm consisting of a series of laminated sheets successively decreasing in diameter, the valve casing having ports therein, and a valve for the ports, said valve being operated from and supported by the diaphragm.

3. A pressure regulating valve comprising a valve casing, a bonnet, the casing and the bonnet having shoulders where they abut,'a .diaphragm composed of laminated sheets, each sheet being smaller in diameter than the one on which it rests, the largest sheet having a flange to fit between the shoulders of the bonnet and easing, the valve casing having ports for the passage 0 fluid, and a valve for controlling the passage of fluid through the ports, said valve it of the this being usually done by the f I have hereto set my hand, this 1st meaeae bein operated from and supported by the diap ragm.

4. A ressure regulating valve comprising a va ve casing, a bonnet, the casing and the bonnet having shoulders where theyabut, a

of the diaphragm, a valve stem secured to and supported by the diaphra m and having an enlarged end in the c amber, said enlarged end having recessed portions extending to the bottom and separated diametrically by a distance less than the diameter gassa e, and a valve having its head adapte to c ose the end of'the passage and secured to a stud, said stud screwing into the center of the stem.

5. A pressure regulating valve comprising a valve casing, a bonnet, the casing and the bonnet having shoulders where they abut, a diaphragm composed of laminated sheets, each sheet being smaller in diameter than the one on which it rests, the largest sheet having a flange to fit between the shoulders of the bonnet and easing, the valve casing having ports, said orts including a chamber and a passage in ine with the axis of the diaphra m, a valve stem secured to and supporte by the diaphragm and having an enlarged end in the chamber, said enlarged end having recessed portions extending to the bottom and separated diametrically by a distance less than the diameter of the passage, a valve having its head adapted to close the end of the passage and secured to astud, said stud screwing into the centerof the'stem, a spring in the honnet with one end abutting on the diaphragm, and an, adjustable means projecting in throu h the top of the bonnet against which the ot er end of the spring abuts.

In testimony that I claim the foregoing, day of LIAM J. BROWN.

August, 1922. 

